111011010001209 has 6 divisors (see below), whose sum is σ = 160349236668426. Its totient is φ = 74007340000800.

The previous prime is 111011010001193. The next prime is 111011010001259. The reversal of 111011010001209 is 902100010110111.

It can be written as a sum of positive squares in only one way, i.e., 85653692285184 + 25357317716025 = 9254928^2 + 5035605^2 .

It is not a de Polignac number, because 111011010001209 - 2⁴ = 111011010001193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111011010001191 and 111011010001200.

It is not an unprimeable number, because it can be changed into a prime (111011010001259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6167278333392 + ... + 6167278333409.

It is an arithmetic number, because the mean of its divisors is an integer number (26724872778071).

Almost surely, 2^{111011010001209} is an apocalyptic number.

It is an amenable number.

111011010001209 is a deficient number, since it is larger than the sum of its proper divisors (49338226667217).

111011010001209 is a wasteful number, since it uses less digits than its factorization.

111011010001209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12334556666807 (or 12334556666804 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 18.

The spelling of 111011010001209 in words is "one hundred eleven trillion, eleven billion, ten million, one thousand, two hundred nine".